Pharmaceutical preparation.



' In; datum a may mm- I mam-rum) Bra-ran inmfann'r, or vmmuy-ausrm f onsnnscuar'r EUR'ANILIN runmcr ompr nnR m,-eanmmr.

Be'it known that I, FERDINAND lli'r'rmi voN-Am/r, a 'sub ectl.o f-the Emperor of Austria Hungary,res1d1n at V1enna,'Austr1ariahiferst-rasse' 93, Vienna, VI, have invented certaui new and useful Improvem'ents n Pharmaceutical, Preparations, of

which the following is a specification. n 10 The citrate of coppe'r'as is well known has powegful bactericldal action and its use causes no trouble;

However, the'suiall .jsolubilit-y. of the preparation in ;watcr (1:9143), or in a common sa'lt solution of 1 I. per cent. strength (,1 z 7700), forms an objection. Thus the application 'of'copper cit -2o -rate as an eye-wash, which would be. very I v which is frequently-desirable.

' The general conclusion is thatthe sparing solubility'of the preparation is the reason I f why' itdoes not cause pain when applied in :the, form of an ointment;

8010f copper citrate in water is indeed essen- The solubility tiallygincreased by .the addition of other salts,' but if such a stronger solution be drop d.' into the eyelasting pain is pro- 86' Now according to my present invention the solubility of copper citrate in water can L beqveryfconsiderably increased in such a manner that the preparation produced does 'notcause pain to the user thereof and the fmeans-I.u'se for this purpose consists in add-.- ring the'necessary proportion of sodium-boro- 1 citratelto. h coppcrcitrate.

the sodium" salt of the actual compound aslwell as the ordinary borocitrate of commerce which isknown to consist of mixtures of sodium borate'and sodium citrate. The

e best solubility of the copper citrate is obrtainedwh'en the proportion of neutral boro; citrate used is such that there are 1 -molecufcltrate 1: thus for example tra choma is-healed by'this remedy in about v per cent. of the cases smoothly and without 15 trouble for the patient.

By'the term sodium borociti'ate I mean i nunaanr, assxonon To borocitrat erespectively. For :m'any pur p s'anfadditio'n oficom mon salt is-advan;

tageous. v p The following example may-serve to illustrate ,my invention,-f the parts being by}:

weight: order to obtgin my new pharma ceutical pre aration in, he solid state I may proceedas oliows: 6.1: parts of crystallized copper citrate and5.3 parts of sodium bo QJlJBO OQON a) ,--C,H,QH (COOK a are dissolvedtogether. in water, whereu on, I the solution thus obtained "is evaporate t0 V dryness=and the residue pulverized. Thus I:

obtained a light. reenish blue to blue powder which" easily issolve's in water to greenish-blue to blue solution which solutio has proved suitable for: use as a lotion in series of infectious conjunctiva complaint or skin diseases. This aqueous solution assume'son-the addition of a concentrated solution of ammonia in 'water a deep blue'., color and-on the addition of a solution of sodium sulfi-d separates black flakes, whereas'fij'.

on the addition 0f-s0da Jlye the solution? changes atfirst to deep blue and thenon boilin 1 separates 'a light green precipitate The above mentioned powder resulting evaporation'of this aqueous solution is in soluble in alcohol, acetone, ether and methyl j, alcohol. 7- p e It is obvious that my present invention is not limited to thejoregoing example or -to the details given therein. Of course I may offer to thetra'de my new pharmaceutical preparation as a'pdwder, made for instance accordingto the above-given'example 0158 8 a lotion. FurthermorcI do not'confine my! self to the proportions of.th'e ingledients given-in the above example. Finally it is; also convenient to state that my new prepa-' ration can bepreparecl in the formof an {1 ointment by incorporating the solid preparation into a suitable ointment base, such as glycerin ointment;'.it maybe advantageous to add to the mass a small proportionof common salt. Ha ving thus described my invcntionand the manner in which it may be carried out what I claim is l -A pharmaceutieal' preparation espec ally adapted for the treatment oftrachoma and ,causing no pain to the patient, comprising 110.

rot.

can be obtained 'oy dissolvingtixapper citmte and sodmm borocltraie m watex; evaporatn ing the solution to dryness, this:new p'repa v ration in the dry state pu lwariz ed beihg a light greenish bluetobhie powderyfeasily: soluble in water to a gx penish blu solution which solution on the s concentrated solution of ammonia in water tion of a solutlon of sodium sulfid 'se'p'a. 1'-ates black flakes, whereas on the 'additionfof a's m'nes adeep blue color and on the addito blue :iion'of a pesses'. 1

sodalye file oligtion ohon'gesat firs't to deep blue and thn on boilin separates a light green preci itate,and w ch new prepau a 15 .tion is inso ublein' alcohol, acetone, ethera'nd methylalcohol. v 1

Ingtestimony wh freof I vhave hereunto get my hand inpl ogoqoo oftwo subscribing wlt- 

